"""
Case Type   : 操作系统类-文件系统故障
Case Name   : 减容/扩容时 主机注入故障系统文件句柄耗尽
Create At   : 2021/8/3
Owner       : li-xin12345
Description :
    1、注入文件系统系统文件句柄耗尽故障
    2、启线程执行减容
    3、清理故障，再次执行减容
    4、注入文件系统系统文件句柄耗尽故障
    5、启线程执行扩容
    6、清理故障，再次执行扩容
    7、运行TPCC
    8、检查数据一致性
    9、恢复环境
Expect      :
    1、故障注入成功
    2、gs_probackup报错“Too many open files”
    3、清理故障成功，减容成功
    4、故障注入成功
    5、扩容报错“Too many open files”
    6、清理故障成功，扩容成功
    7、运行TPCC成功
    8、数据一致
    9、恢复环境
History     :
"""
import time
import unittest

from testcase.utils.ComThread import ComThread
from testcase.utils.Common import Common
from testcase.utils.CommonSH import CommonSH
from testcase.utils.CommonSH import RestartDbCluster
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger
from yat.test import Node, macro


class ReliabilityFileSystem(unittest.TestCase):
    nodes = ("PrimaryDbUser", "Standby1DbUser", "Standby2DbUser")

    @RestartDbCluster(*nodes)
    def setUp(self):
        self.log = Logger()
        self.primary_node = Node(self.nodes[0])
        self.s_node1 = Node(self.nodes[1])
        self.primary_sh = CommonSH(self.nodes[0])
        self.s_com1 = CommonSH(self.nodes[1])
        self.s_com2 = CommonSH(self.nodes[2])
        self.primary_root_node = Node(node="PrimaryRoot")
        self.primary_root_sh = CommonSH("PrimaryRoot")
        self.constant = Constant()
        self.com = Common()
        self.file = os.path.join(macro.DB_INSTANCE_PATH,
                                 macro.DB_PG_CONFIG_NAME)
        self.log.info("setUp-实例化:ok")

        self.log.info("Opengauss_Reliability_OS_File_System_Case054:开始执行")

        self.inject_cmd = f"rfile_deplenish (timeout) values (300)"

    def test_main(self):
        text = "备份postgresql.conf文件"
        self.log.info(text)
        result = self.primary_node.sh(f"cp {self.file} "
                                      f"{self.file}backup").result()
        self.log.info(result)

        try:
            text = "--step1:主节点注入句柄耗尽故障;expect:成功"
            self.log.info("注入故障")
            session1 = ComThread(self.com.cfe_inject,
                                 args=(self.primary_root_node,
                                       self.inject_cmd))
            session1.setDaemon(True)
            session1.start()
            time.sleep(1)

            text = "--step2：执行减容"
            self.log.info(text)
            self.log.info("启线程执行减容")
            execute_cmd = f'''source {macro.DB_ENV_PATH};
                        expect <<EOF
                        set timeout 120
                        spawn gs_dropnode -U {self.primary_node.ssh_user} \
                        -G {self.primary_node.ssh_user} \
                        -h {self.s_node1.ssh_host}
                        expect "*drop the target node (yes/no)?*"
                        send "yes\\n"
                        expect eof\n''' + '''EOF'''
            self.log.info(execute_cmd)
            session2 = ComThread(self.com.get_sh_result,
                                 args=(self.primary_node, execute_cmd))
            session2.setDaemon(True)
            session2.start()
            time.sleep(2)

            self.log.info("减容结果")
            session2.join(60 * 5)
            result = session2.get_result()
            self.log.info(result)
            self.assertNotIn("Success to drop the target nodes", result,
                             "执行失败" + text)
            self.assertIn(self.constant.TOO_MANYY_FILE_MSG, result,
                          "执行失败" + text)

            self.log.info("故障注入结果")
            session1.join(60 * 5)
            result = session1.get_result()
            self.log.info(result)
            self.assertIn("successful execution", result, "执行失败" + text)

        finally:
            text = "--step3:清除故障;expect:成功"
            for i in range(5):
                result = self.com.cfe_query(self.primary_root_node,
                                            "rfile_deplenish")
                self.log.info(result)
                if self.constant.TOO_MANYY_FILE_MSG in result:
                    time.sleep(60)
                else:
                    break
            result = self.com.cfe_query(self.primary_root_node,
                                        "rfile_deplenish")
            self.log.info(result)
            self.assertNotIn(self.constant.TOO_MANYY_FILE_MSG, result,
                             "执行失败" + text)

            text = "--step4:再次减容"
            self.log.info(text)
            execute_cmd = f'''source {macro.DB_ENV_PATH};
                        expect <<EOF
                        set timeout 120
                        spawn gs_dropnode -U {self.primary_node.ssh_user} \
                        -G {self.primary_node.ssh_user} \
                        -h {self.s_node1.ssh_host}
                        expect "*drop the target node (yes/no)?*"
                        send "yes\\n"
                        expect eof\n''' + '''EOF'''
            self.log.info(execute_cmd)
            result = self.primary_node.sh(execute_cmd).result()
            self.log.info(result)
            self.assertIn("Success to drop the target nodes", result,
                          "执行失败" + text)
            self.assertNotIn(self.constant.TOO_MANYY_FILE_MSG, result,
                             "执行失败" + text)

        self.log.info("减容测试结束 开始扩容测试")

        try:
            text = "--step5:主节点注入句柄耗尽故障;expect:成功"
            self.log.info("注入故障")
            session1 = ComThread(self.com.cfe_inject,
                                 args=(self.primary_root_node,
                                       self.inject_cmd))
            session1.setDaemon(True)
            session1.start()
            time.sleep(1)

            text = "--step5：执行扩容"
            self.log.info(text)
            self.log.info("启线程扩容")
            session2 = ComThread(self.primary_root_sh.exec_expension,
                                 args=(f"{self.primary_node.ssh_user}",
                                       f"{self.primary_node.ssh_user}",
                                       f"{self.s_node1.ssh_host}",
                                       f"{macro.DB_XML_PATH}"))
            session2.setDaemon(True)
            session2.start()
            time.sleep(2)

            self.log.info("扩容结果")
            session2.join(60 * 5)
            result = session2.get_result()
            self.log.info(result)
            self.assertFalse(result)

            self.log.info("故障注入结果")
            session1.join(60 * 5)
            result = session1.get_result()
            self.log.info(result)
            self.assertIn("successful execution", result, "执行失败" + text)

        finally:
            text = "--step6:清除故障;expect:成功"
            for i in range(5):
                result = self.com.cfe_query(self.primary_root_node,
                                            "rfile_deplenish")
                self.log.info(result)
                if self.constant.TOO_MANYY_FILE_MSG in result:
                    time.sleep(60)
                else:
                    break
            result = self.com.cfe_query(self.primary_root_node,
                                        "rfile_deplenish")
            self.log.info(result)
            self.assertNotIn(self.constant.TOO_MANYY_FILE_MSG, result,
                             "执行失败" + text)

            text = "--step6:再次扩容"
            self.log.info(text)
            result = self.primary_root_sh.exec_expension(
                f"{self.primary_node.ssh_user}",
                f"{self.primary_node.ssh_user}",
                f"{self.s_node1.ssh_host}",
                f"{macro.DB_XML_PATH}",
                detail=True)
            self.log.info(result)
            self.assertIn("Expansion Finish", result, "执行失败" + text)
            self.assertNotIn(self.constant.TOO_MANYY_FILE_MSG, result,
                             "执行失败" + text)

        db_status = self.primary_sh.getDbClusterStatus("detail")
        self.log.info(db_status)
        self.assertTrue("Degraded" in db_status or "Normal" in db_status)

        text = "--step7:运行TPCC;expect:成功"
        result = self.com.startTPCC(self.primary_root_node, macro.TPCC_PATH)
        self.log.info(result)
        self.assertIn(self.constant.TPCC_SUCCESS_MSG, result, "执行失败" + text)

        self.log.info("检查主备是否同步")
        time.sleep(10)
        self.log.info("获取节点数量")
        node_num = self.primary_sh.get_node_num()
        res = self.primary_sh.check_location_consistency("primary", node_num)
        self.assertTrue(res, "执行失败" + text)

        text = "--step8:检查数据一致性;expect:成功"
        nodes = (Node(self.nodes[0]), Node(self.nodes[1]),
                 Node(self.nodes[2]))
        flag = self.com.check_data_sample_by_all(r'\d', *nodes)
        self.assertTrue(flag, "执行失败" + text)
        table_dict = self.com.format_sql_result(
            self.primary_sh.executDbSql(r'\d'))
        table_name = table_dict.get('Name')
        for name in table_name:
            select_sql = f"select count(*) from {name};"
            flag = self.com.check_data_sample_by_all(select_sql, *nodes)
            self.assertTrue(flag, "执行失败" + text)

    def tearDown(self):
        text = "--step9:环境清理;expect:成功"
        result = self.com.cfe_query(self.primary_root_node,
                                    "rfile_deplenish")
        self.log.info(result)
        if self.constant.TOO_MANYY_FILE_MSG in result:
            time.sleep(300)

        self.log.info("扩容")
        result = self.primary_sh.executDbSql(
            "select count(*) from pg_stat_get_wal_senders();")
        self.log.info(result)
        if "2" != result.split("\n")[-2].strip():
            result = self.primary_root_sh.exec_expension(
                f"{self.primary_node.ssh_user}",
                f"{self.primary_node.ssh_user}",
                f"{self.s_node1.ssh_host}",
                f"{macro.DB_XML_PATH}",
                detail=True)
            self.log.info(result)
            self.assertIn("Expansion Finish", result, "执行失败" + text)

        self.log.info("恢复各节点synchronous_standby_names")
        self.primary_sh.executeGsguc("reload",
                                    self.constant.GSGUC_SUCCESS_MSG,
                                    f"synchronous_standby_names="
                                    f"'{self.synchronous_standby_names_p}'",
                                    single=True)
        self.s_com1.executeGsguc("reload",
                                self.constant.GSGUC_SUCCESS_MSG,
                                f"synchronous_standby_names="
                                f"'{self.synchronous_standby_names_s1}'",
                                single=True)
        self.s_com2.executeGsguc("reload",
                                self.constant.GSGUC_SUCCESS_MSG,
                                f"synchronous_standby_names="
                                f"'{self.synchronous_standby_names_s2}'",
                                single=True)

        result = Node(self.nodes[0]).sh("date").result()
        self.assertNotIn(self.constant.TOO_MANYY_FILE_MSG, result,
                         "执行失败" + text)
        self.log.info("故障已清理")
        self.log.info("Opengauss_Reliability_OS_File_System_Case054:执行完成")
